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Finding the Fourth Proportional to 86,437.86, 119,239.79 and 57,748.37

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Solution

The fourth proportional to 86,437.86, 119,239.79 and 57,748.37 is: 79,663.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,437.86 : 119,239.79 = 57,748.37 : x
  2. Step 2: Convert to fraction form
    86,437.86/119,239.79 = 57,748.37/x
  3. Step 3: Cross multiply
    86,437.86x = 119,239.79 × 57,748.37
  4. Step 4: Simplify right side
    86,437.86x = 6,885,902,626.70
  5. Step 5: Solve for x
    x = 6,885,902,626.70/86,437.86
  6. Step 6: Final answer
    x = 79,663.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.